Propagação superluminal de pulsos com suporte compacto suave em circuitos eletrônicos
Ano de defesa: | 2010 |
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Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Alagoas
Brasil Programa de Pós-Graduação em Física UFAL |
Programa de Pós-Graduação: |
Não Informado pela instituição
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Departamento: |
Não Informado pela instituição
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País: |
Não Informado pela instituição
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Palavras-chave em Português: | |
Link de acesso: | http://www.repositorio.ufal.br/handle/riufal/4753 |
Resumo: | In this work, using pulses based on functions with compact support and perfectly smooth infinitely differentiable zero intensity non analytical points, We demonstrated numerically and experimentally, a new approach to model information propagating through an electronic circuit producing negative group delays. Here, the information is associated to smooth non analytical points present in the leading edge of a pulse. The pulse or any of its derivatives does not present any discontinuity, in direct contradiction with standard literature that claims the necessity of a discontinuous front or a discontinuous derivative in order to code information. Our results show that the non analytical point in the pulse’s leading edge propagates with a velocity equal to velocity of light in vacuum c for all investigated cases. We find that the causality influence on the pulse propagation through a superluminal system, producing pulse steepening and even breakup. Our results contribute to a better undestanding of information propagation and shed light over perhaps one of the last misconceptions regarding superluminality and the speed of information |